Kanagawa Prefectural Museum of Natural History
http://nh.kanagawa-museum.jp/index_en.htmlThe Museum was established in March 1995, separated and developed from the natural history section of the Kanagawa Prefectural Museum in Yokohama. In addition to the exhibitions, the Museum conducts such work as survey and research on nature, and material collection and preservation. Utilizing these, it also carries out study support activities like lecture courses, observation sessions, etc.
499 Iryuda, Odawara, Kanagawa 250-0031, Japan
Also see their magazine
https://www.strahlen.org/forum/index.php/topic,21966.0.html